Mads Nikolaj Holten-Andersen

• Klokk, Ragnhild; Bakken, Kjersti Sletten; Markestad, Trond Jacob & Holten-Andersen, Mads Nikolaj (2022). Modifiable and non-modifiable risk factors for obstetric anal sphincter injury in a Norwegian Region: a case–control study. BMC Pregnancy and Childbirth. ISSN 1471-2393. 22(1). doi: 10.1186/s12884-022-04621-2. Fulltekst i vitenarkiv
• Kaldenbach, Siri; Leonhardt, Marja; Lien, Lars; Bjertnæs, Asborg Sine Aanstad; Strand, Tor Arne & Holten-Andersen, Mads Nikolaj (2022). Sleep and energy drink consumption among Norwegian adolescents – a cross-sectional study. BMC Public Health. ISSN 1471-2458. 22. doi: 10.1186/s12889-022-12972-w. Fulltekst i vitenarkiv Vis sammendrag

  Background Adolescents are recommended to get 8–10 h of sleep at night, yet more than 80% fail to obtain this goal. Energy drink (ED) consumption has been linked to later bedtime in adolescents. Therefore, we aimed to investigate the potential association between ED consumption and sleep duration, and shuteye latency among adolescents in Norway. Methods This study was based on data from 15- to 16-year-old adolescents living in Oppland County in 2017. In total, 1353 adolescents were included in the analysis. Multiple regression models were used to estimate the associations between the frequency of ED consumption with sleep duration, shuteye latency, and getting 8 h of sleep. Results Forty-six point five percent of the adolescents reported sleeping more than 8 h at night. Those who reported ED consumption at any frequency had significantly shorter sleep duration than those who did not. On average, high consumers of ED (consuming ED ≥ 4 times a week) had 0.95 (95% CI: 0.61, 1.28) hours (i.e., 57 min) less sleep than those who never consumed ED. In addition, high consumers had more than 25 min (95% CI: 13.95, 36.92) longer shuteye period than those who never consumed ED. Conclusion Most ED consumers fail to obtain the recommended 8 h of sleep at night, which could be a consequence of shorter sleep duration and longer shuteye latency. We found a dose-response relationship between frequency of ED consumption and reduced sleep. Yet, the potential long-term effects of both ED consumption and insufficient sleep among adolescents remain unclear.

• Kaldenbach, Siri; Strand, Tor Arne; Solvik, Beate Stokke & Holten-Andersen, Mads Nikolaj (2021). Social determinants and changes in energy drink consumption among adolescents in Norway, 2017-2019: a cross-sectional study. BMJ Open. ISSN 2044-6055. 11. doi: 10.1136/bmjopen-2021-049284. Fulltekst i vitenarkiv
• Bjertnæs, Asborg Sine Aanstad; Schwinger, Catherine; Juliusson, Petur Benedikt; Strand, Tor A; Holten-Andersen, Mads Nikolaj & Bakken, Kjersti Sletten (2020). Health-related behaviors in adolescents mediate the association between subjective social status and body mass index. International Journal of Environmental Research and Public Health (IJERPH). ISSN 1661-7827. 17(19), s. 1–16. doi: 10.3390/ijerph17197307. Fulltekst i vitenarkiv
• Bjertnæs, Asborg Sine Aanstad; Fossum, Ingrid Nesdal; Oma, Ingvild; Bakken, Kjersti Sletten; Strand, Tor A & Holten-Andersen, Mads Nikolaj (2020). A cross-sectional study of the relationship between mental health problems and overweight and obesity in adolescents. Frontiers in Public Health. ISSN 2296-2565. 8:334, s. 1–8. doi: 10.3389/fpubh.2020.00334. Fulltekst i vitenarkiv
• Holten-Andersen, Mads Nikolaj; Haugen, Johanne; Oma, Ingvild & Strand, Tor A (2020). Vitamin D Status and Its Determinants in A Paediatric Population in Norway. Nutrients. ISSN 2072-6643. 12 (5)(5). doi: 10.3390/nu12051385. Fulltekst i vitenarkiv
• Bjertnæs, Asborg Sine Aanstad; Grundt, Jacob Holter; Juliusson, Petur Benedikt; Markestad, Trond Jacob; Strand, Tor A & Holten-Andersen, Mads Nikolaj (2019). Sex-related change in BMI of 15- to 16-year-old Norwegian girls in cross-sectional studies in 2002 and 2017. BMC Pediatrics. ISSN 1471-2431. 19(431), s. 1–9. doi: 10.1186/s12887-019-1790-2. Fulltekst i vitenarkiv
• Bjertnæs, Asborg Sine Aanstad; Grundt, Jacob Holter; Donkor, Hilde Mjell; Juliusson, Petur Benedikt; Wentzel-Larsen, Tore & Vaktskjold, Arild [Vis alle 8 forfattere av denne artikkelen] (2019). No significant associations between breastfeeding practices and overweight in 8-year-old children. Acta Paediatrica. ISSN 0803-5253. 109(1), s. 109–114. doi: 10.1111/apa.14937. Fulltekst i vitenarkiv
• Degirmenci, Naim; Fossum, Ingrid Nesdal; Strand, Tor A; Vaktskjold, Arild & Holten-Andersen, Mads Nikolaj (2018). Consumption of energy drinks among adolescents in Norway: a cross-sectional study. BMC Public Health. ISSN 1471-2458. 18(1391). doi: 10.1186/s12889-018-6236-5. Fulltekst i vitenarkiv Vis sammendrag

  Background Energy drink (ED) consumption is increasing all over the world. We sought to describe the consumption of EDs among adolescents in Norway, and to explore the determinants of daily and high consumption. Methods Population-based cross-sectional data were collected from a sample of 31,091 secondary school students in grade 8–13 aged 12–19 years. School grade, residency, socioeconomic status (SES), physical activity and leisure screen time were included in multiple regression analyses, in order to investigate their associations with daily and high (≥four times weekly) ED consumption. Results 52.3% of the respondents were ED consumers and 3.5% were high consumers. Boys consumed twice as much ED as girls (boys: 36.3 ml/day, girls: 18.5 ml/day, geometric means), and the proportion of male high consumers was 3.7-times higher than that of females. The adjusted odd ratio (OR) of upper secondary school (grades 11–13, ages 15–19) students being high ED consumers were higher than for lower secondary school (grades 8–10, ages 12–15) students (OR 1.1(confidence interval (CI):1.0–1.3)), as well as higher for rural than urban residents (OR 1.3 (CI: 1.1–1.5)). Gradients for the increased ORs of being a high ED consumer were found for decreased SES, decreased frequency of physical activity and increased daily leisure screen time. Conclusions More than half of the respondents reported that they were ED consumers. Daily and high consumption were independently associated with male gender, physical inactivity, high leisure screen time, low socioeconomic status and rural residency.

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